820268471 has 8 divisors (see below), whose sum is σ = 908194944. Its totient is φ = 734568120.

The previous prime is 820268453. The next prime is 820268483. The reversal of 820268471 is 174862028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 820268471 - 2²⁶ = 753159607 is a prime.

It is a super-3 number, since 3×820268471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820268431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555755 + ... + 557228.

It is an arithmetic number, because the mean of its divisors is an integer number (113524368).

Almost surely, 2^820268471 is an apocalyptic number.

820268471 is a deficient number, since it is larger than the sum of its proper divisors (87926473).

820268471 is a wasteful number, since it uses less digits than its factorization.

820268471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113061.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 820268471 is about 28640.3294499208. The cubic root of 820268471 is about 936.0923000360.

The spelling of 820268471 in words is "eight hundred twenty million, two hundred sixty-eight thousand, four hundred seventy-one".